package com.lanou3g.code0510;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Created by dllo on 18/5/10.
 */
@WebServlet(name = "BServlet", urlPatterns = "/b")
public class
 BServlet extends HttpServlet {

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        // response.setContentType("text/html;charset=utf-8");
        response.addHeader("content-Type", "text/html;charset=utf-8");

        // 设置请求头 5秒后回到主页
        // 定时刷新我们不需要设置状态码
        // 自动的,到时候就自己重定向过去了
        response.setHeader("Refresh","5;URL=/index.jsp");
        /*
        * setHeader和addHeader区别
        * addHeader 可以响应头中 一个key对应多个值
        * setHeader 不可以,key相同只会保留最后一个值
        * setHeader用的比较多
        * */

        response.getWriter().println("<a href=\"/index.jsp\">5秒后回到主页,如果没成功点击此处</a>");
    }
}